Bro this due today I will be giving a Brainlist ^ ^

Choose one fifty-year period between 1820 and 2010. With your group, research the major world events that happened in your time period. Events might include wars, economic declines or booms, religious persecution or environmental disaster. Do you see a connection between your events and immigration to the United States? Why or why not?

the great wall of china worked as a defense for the feudal states of the zhou dynasty to the north. during the warring states period more walls were put up to defend the borders of the different kingdoms. it was semi successful because despite the wall, the mongols eventually conquered china also the great wall provided protection to the economic development and cultural progress, safeguarded the trading routes such as the silk road, and secured transmission of information and transportation. @jayxboof

because their parents smoke while in labor